DTC Logic

Diagnosis Procedure
1.CHECK USB HARNESS
Visually check USB harness.
U1243 display unit
U1255 satellite radio tunerClimate controlled seat switch indicator
Description
Illuminates the climate controlled seat switch to indicate operating status.
Component Function Check
1.CHECK CLIMATE CONTROLLED SEAT SWITCH INDICATOR FUNCTION
Check that the indicators for the climate controlled seat switch operate in
both COOL and HEAT modes.
Diagnosis Procedure ...
Wiring diagram
AIR CONDITIONER CONTROL
Wiring Diagram - With Monochrome Display
...
Compressor control function
Description
PRINCIPLE OF OPERATION
A/C compressor is not activated.
Functional circuit diagram
CAN (1): A/C switch signal
: Blower fan motor switch signal
CAN (2): A/C compressor request signal
RX: A/C switch signal
: Fan ON signal
: Defroster signal
Functional initial inspection chart ...